Card index



April G. H. DAWSON- CARD INDEX Filed July 10. 1925 Qeor eflDawsozz .Jxr VET'TlEIF-k" d @Q X\XX\\&\ f,

Patented Apr. 1 1930 UNITED STATES PATENT OFFICE GEORGE E. DAWSON, OI CAMBRIDGE, MASSACHUSETTS, ASSIGNOR, BY MESNE ASQIGN- MENTS, TO REMINGTON RAND INC., OF NEW YORK, N. Y., A CORPORATION OF DELA- WARE CARD INDEX Application filed July 10,

concerns itself primarily with a structure comprising a series of articulated supports upon which the cards are slidably retained by the coaction of the supports.

The invention comprises the novel structure and combinations hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawings, which il- I lustrate a preferred embodiment of this invention and in which similar reference numerals refer to similar features in the different views:

Figure 1 is a front elevational view of an index involving this invention;

Figure 2 is an enlarged elevational .view of a pair of articulated upports with attached cards detached from t e index;

Figure 3 is an enlarged sectional view upon the line III-III of Figure 2; and

Figure 4 is a fragmentary view of the supports in reversed position from that shown in Figure 2.

As shown on the drawings:

As illustrative of this invention, there is shown a series of articulated card supports 1. Each support has a pair of V-shaped clefts in each lateral edge. Each cleft is spaced a short distance from a horizontal edge whereby articulating tongues 2 and 3 are formed. Each support has a pair of intermediate triangular apertures 4. The base of each triangular aperture lies in a vertical plane, and the apex of each triangular aperture is directed outwardl toward the edge of the card. The distance etween such apices is slightly greater than the distance between-the apices of the V- shaped clefts. The tongues of one card are adapted for detachable engagement in the apertures of the adjoining card in the series.

It will be' noted that the apertures 4 are offset from the longitudinal center line of each support, so the distance from one longitudinal edge of the support to the apertures is greater than the distance from the other longitudinal edge to the apertures. These 1925. Serial No. 42,728.

distances define the extent of the exposed edges of the cards mounted upon the supports as is evident from Figure 3. Consequently if the supports are inverted, as shown in Fig. 4, that is turned upside down and the tongues 3 are used for articulating the supports together, the supported cards will have exposed margins of different area than when the supports are articulated by the tongues 2.

A card 5 for recording data or the like is loosely and slidably mounted upon each suport. All the cards are similarly supported.

ach card has its upper portion folded around a support as shown in Figure 3, and as the supports are articulated together in overlapping relation, the folds will be confined and retained from unfolding by the supports. Thus in Figure 3, the front folded portion 6 of the upper cardis situated between two supports, and the rear fold 7 of the nether card is confined between the same support. It will be understood that an empty support may be attached to the rear support in Figure 2 for covering the rear fold of the upper card if desirable.

The cards overlap at their lower ends to provide exposed margins. By inverting the supports as previously explained, an operation which is possible, since the supports can be readily withdrawn from the folds, a different sized exposed margin will be obtained. This may be highly desirable .in some instances. And, as the cards are loosely mounted upon their supports, any card may be laterally offset with respect to the others. In Figure 1 I have shown a card 5 in such offset position.

It is characteristic of this invention that the cards are directly attached to the supports by folding a portion around the support, and that the overlapping supports maintain the folded relation of the folded portions, and that the supports may be inverted to change the area of the exposed margins. Itwill also be appreciated that this structure allows any card to be laterallyoffset with respect to the others.

I am aware that many changes may be made and numerous details of construction may be varied through a wide'range without departing from the principles of this invention,

and I therefore do not. purpose limiting the patent granted hereon, otherwise than as necessitated by the prior art.

I claim as my invention:

1. In a visible index, a series of articulated card supports having overlapping parts, and a card having a portion folded around one support, the fold being confined by the coaction of a pair of supports.

2. In a card index, a series of articulated supports, a card slidably mounted upon each support, each card having a portion folded around its support, and the fold of each card being confined between adjacent sup-.

ports.

3. In a card index, a series of articulated supports, a series of cards mounted upon said supports in overlapping relation whereby each card has an exposed margin, and means on each support for articulating it in inverted position for'varying'the exposed margin of the adjoining card.

4. In a card index. a series of articulated supports, a card slidably mounted upon each support, said cards having exposed margins, and said supports having means for articulating the same in inverted position for changing the area of the exposed margins.

5. In a card index, a series of articulated supports, a series of cards slidably mounted upon said supports, each card having a portion folded around its support, said folded portion being compressed by an adjacent support.

6..In a card index, a series of articulated supports, a card suspended from each support and retained thereon by engagement between said support and an adjacent support, said card being adapted for hinging movement relative to its support. 1

In testimony whereof I have hereuntosubscribed my name. V

GEORGE H. DAWSON. 

